How long you (to wait) for me?

How long you (to wait) for me? I am really very sorry. 4. Yesterday I (to meet) a friend of mine whom I (not to see) for a long time. 5. Ring me up at eleven o'clock, I (not yet to sleep). 6. You (to be) late for the concert if you (not to take) a taxi. 7. The sun (to set) a long time ago, and it (to begin) to get really cold. 8. When I (to come) home yesterday, my sister already (to re turn) and (to sit) at the fireplace looking through some old photographs. 9. He (to smoke) three cig arettes and (to look) through all the books on the shelf, when at last he (to hear) his friend's steps approaching the door. 10. He just (to approach) the door, when she (to enter). 11. He (to write) the composition for three hours and he (to say) he soon (to finish) it as he (to think) over the conclusion now. 12. Hardly1 I (to go) out when I (to remem ber) that I (to forget) to take my umbrella. 13. Where is the baby? — The nurse (to put) it to bed. 14. He said he (to work) for a long time with out achieving good results.